They can be either one. For instance, ozone is a gas and is there homogeneous, but soot particles are suspended solids (aerosols) and are therefore heterogeneous.
Yes, air is considered a homogeneous mixture because it is made up of a combination of gases, such as nitrogen, oxygen, carbon dioxide, and others, that are uniformly distributed throughout. This means that the composition of air is consistent throughout its volume.
Sand with shells is a heterogeneous mixture because it contains different components (sand and shells) that are visibly different and can be separated easily. In a homogeneous mixture, the components are evenly distributed and not easily distinguishable.
Yes. It is a homogeneous mixture. It is a heterogeneous mixture. COLLOID because it does not settle but at the same time it makes stuff Smokey for example if you put a cup of water in a sun ray you may see little wavy things almost like hair flying in to the water and it sort of makes if foggy Dusty air is a suspension. The dust particles keep their shape. There is nothing in air to dissolve dust. mixture
Barium is an element and therefore a pure substance, so it is considered a homogeneous material.
No, carbon mixed with sand is not a homogeneous mixture. It would be considered a heterogeneous mixture because the carbon and sand do not completely mix at a molecular level and can be visibly distinguished from each other.
City air is a heterogeneous mixture because it contains a variety of different gases, particles, and pollutants that are not evenly distributed throughout the air.
pure air is homogeneous but dusty air is heterogeneous
Pure air is homogeneous because all components are completely miscible.
heterogeneous
homogeneous
Air is a homogeneous mixture.
Air is a homogeneous mixture.
Air is homogeneous mixture of gases.
Air is a homogeneous mixture.
homogeneous
yes
Depends on the quantity of air you are considering.